CN117644140B - High-pressure-resistant elbow forming device and forming process for thermal power station - Google Patents
High-pressure-resistant elbow forming device and forming process for thermal power station Download PDFInfo
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- CN117644140B CN117644140B CN202410116170.XA CN202410116170A CN117644140B CN 117644140 B CN117644140 B CN 117644140B CN 202410116170 A CN202410116170 A CN 202410116170A CN 117644140 B CN117644140 B CN 117644140B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 title claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000008093 supporting effect Effects 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 5
- 210000001161 mammalian embryo Anatomy 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 230000009471 action Effects 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000007493 shaping process Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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Abstract
The invention relates to the field of pipe bending, in particular to a high-pressure-resistant elbow forming device and a forming process for a thermal power station. According to the invention, the outer forming die and the inner forming die are arranged at intervals, so that the internal stress of the pipe blank can be released during hot forming, the friction force between the outer forming die and the inner forming die and the pipe blank is reduced, the drawing effect between the pipe blank and the outer forming die and the inner forming die at a higher temperature is reduced, the elbow forming quality of the pipe blank is better, and the processing efficiency is higher.
Description
Technical Field
The invention relates to the field of pipe bending, in particular to a high-pressure-resistant elbow forming device and a forming process for a thermal power station.
Background
An elbow is a pipeline joint, and is common in industry, such as a high-pressure-resistant elbow for a thermal power station. In the processing procedure of the elbow, hot pushing, stamping, extrusion forming and the like are commonly used, wherein the hot pushing elbow forming process is the most widely used manufacturing process, and the elbow manufactured by processing is attractive in appearance, uniform in wall thickness and suitable for mass production.
In the prior art, for example, the chinese patent application publication No. CN116140434B discloses a hot press forming device for elbow pipe fittings, which can support and limit the inside and outside of a steel pipe by setting an upper die, a lower die and an inner die, so that the processing and forming quality of the steel pipe is better, but the following defects are found in practical application: when the steel pipe is formed by heat, the friction force between the upper die, the lower die, the inner die and the steel pipe is large, the dies and the steel pipe are easy to be mutually involved, and further the problem that the surface forming quality of the steel pipe is affected due to the fact that folds and the like appear on the surface of the steel pipe is caused.
Disclosure of Invention
Accordingly, in order to solve the problems of the prior art, it is necessary to provide a high-pressure-resistant elbow molding device and molding process for a thermal power station, wherein the inner molding die and the outer molding die are designed to be capable of sliding along the molding track of the pipe blank at intervals, so that the internal stress during the thermoforming of the pipe blank can be released, and the problem that the surface molding quality of the pipe blank is affected by wrinkles and the like on the surface of the pipe blank due to overlarge friction force between the dies of the pipe blank caused by local bulge of the pipe blank can be avoided.
The above purpose is achieved by the following technical scheme:
a high-pressure-resistant elbow forming device for a thermal power station comprises:
a forming platform;
the guide mandrel is arranged on the forming platform and extends along the left-right direction;
the pipe blank is sleeved outside the guide mandrel;
the pusher is arranged on the forming platform and used for pushing the pipe embryo to move along the guide mandrel;
the heating coil is arranged on one side of the guide mandrel and is used for heating the pipe blank passing through the heating coil;
the outer forming dies are arranged at intervals and are elastically connected with each other, and the outer forming dies can slide back and forth along the forming track of the pipe blank;
the inner forming dies are also multiple, are arranged at intervals and are elastically connected with each other, and can slide back and forth along the forming track of the pipe blank.
In one embodiment, the outer forming die and the inner forming die move in opposite directions along the forming track of the pipe blank.
In one embodiment, the forming platform is provided with a first driving assembly, and the first driving assembly is used for driving the plurality of outer forming dies to slide back and forth along the forming track of the pipe blank.
In one embodiment, the first driving assembly comprises a plurality of supporting frames, rotating wheels, connecting rods and deflector rods, wherein the supporting frames are symmetrically arranged on the forming platform and located on the front side and the rear side of the outer forming die, the side surfaces of the supporting frames are provided with through guide grooves, the guide grooves are matched with forming tracks of pipe blanks, the rotating wheels can rotate around the axes of the rotating wheels and rotate on the supporting frames, the deflector rods are arranged on the circumference of the rotating wheels at intervals, the connecting rods are fixedly connected to the front end and the rear end of the outer forming die, and the connecting rods are matched with the deflector rods in a blocking mode.
In one embodiment, a second driving assembly is arranged at the right end of the forming platform and used for driving the inner forming dies to slide back and forth along the forming track of the pipe blank.
In one embodiment, the second driving assembly comprises a telescopic rod and an arc-shaped connecting block, the fixed end of the telescopic rod is connected to the forming platform, the arc-shaped connecting block is elastically connected to the right end of the guide mandrel, and the telescopic end of the telescopic rod is abutted against the arc-shaped connecting block;
among the plurality of inner forming dies, the inner forming die at the rightmost end is connected with the arc-shaped connecting block, and the inner forming die at the leftmost end is connected with the left end of the guide mandrel.
In one embodiment, the right end of the forming platform is provided with a planetary disc, the planetary disc can rotate around the axis of the planetary disc, a plurality of telescopic rods are arranged, and the plurality of telescopic rods are circumferentially and equidistantly arranged on the planetary disc.
In one embodiment, the telescopic rod is further provided with a spray head.
In one embodiment, the forming platform is further provided with a linear guide rail, the linear guide rail extends along the left-right direction, and the propeller is in sliding connection with the linear guide rail.
A high-pressure-resistant elbow forming process for a thermal power station comprises the following steps:
s100, sequentially sleeving a plurality of pipe blanks outside a guide mandrel;
s200, starting a propeller to drive the pipe blank to move from left to right;
s300, starting the first driving assembly to drive the outer forming dies to slide reciprocally along the forming track of the pipe blank, and simultaneously starting the second driving assembly to drive the inner forming dies to slide reciprocally along the forming track of the pipe blank.
The beneficial effects of the invention are as follows:
according to the invention, the outer forming die and the inner forming die are arranged at intervals, so that the internal stress of the pipe blank can be released during hot forming, the friction force between the outer forming die and the inner forming die and the pipe blank is reduced, the drawing effect between the pipe blank and the outer forming die and the inner forming die at a higher temperature is reduced, the elbow forming quality of the pipe blank is better, and the processing efficiency is higher.
Drawings
FIG. 1 is an overall schematic diagram of a high-pressure-resistant elbow forming device for a thermal power station according to the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 2;
FIG. 4 is a cross-sectional view of a high pressure resistant elbow molding device for a thermal power station according to the present invention;
FIG. 5 is an enlarged view of the structure at C in FIG. 4;
FIG. 6 is an enlarged view of the structure at D in FIG. 5;
FIG. 7 is a schematic view of an inner molding die in a high pressure resistant elbow molding device for a thermal power station according to the present invention;
FIG. 8 is a schematic view of an outer forming die in a high pressure resistant elbow forming device for a thermal power station according to the present invention;
fig. 9 is a schematic diagram showing the cooperation of an outer forming die and an inner forming die in the high-pressure-resistant elbow forming device for a thermal power station.
Wherein:
100. a forming platform; 110. a linear guide rail; 200. a guide mandrel; 300. a tube blank; 400. a propeller; 500. a heating coil; 600. an outer forming die; 610. a first spring; 700. an inner molding die; 710. a second spring; 800. a first drive assembly; 810. a support frame; 811. a guide groove; 820. a rotating wheel; 830. a connecting rod; 840. a deflector rod; 900. a second drive assembly; 910. a telescopic rod; 920. an arc-shaped connecting block; 921. a third spring; 930. a planetary disc; 940. a spray head.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1 to 9, a high pressure resistant elbow molding device for a thermal power station includes a molding platform 100, a guiding mandrel 200, a pipe blank 300, a pusher 400, a heating coil 500, an outer molding die 600 and an inner molding die 700, wherein the guiding mandrel 200 is disposed on the molding platform 100 and the guiding mandrel 200 extends in a left-right direction, the pipe blank 300 is sleeved outside the guiding mandrel 200, the pusher 400 is disposed on the molding platform 100 and is used for pushing the pipe blank 300 to move along the guiding mandrel 200, the heating coil 500 is disposed at one side of the guiding mandrel 200 and is used for heating the pipe blank 300 passing through the heating coil 500, the outer molding die 600 has a plurality of outer molding dies 600, a plurality of outer molding dies 600 are disposed at intervals and are elastically connected with each other, specifically, two adjacent outer molding dies 600 are connected through a first spring 610, the outer molding dies 600 have an annular block, the inner diameter of the annular block is matched with the outer diameter of the pipe blank 300, the plurality of outer molding dies 600 can slide reciprocally along the molding track of the guiding mandrel 200, the inner molding die 700 also has a plurality of inner molding dies 700, the outer molding dies 700 have an annular block, the inner molding dies are also have a plurality of annular blocks, the outer molding dies 600 are the annular block, and the inner molding dies are connected with the inner annular dies 300 through the plurality of adjacent inner molding dies 300 through the elastic inner diameter of the elastic dies which are disposed reciprocally and are connected with the inner elastic dies 700 through the plurality of adjacent inner molding dies 700.
When the pipe blank 300 is used, a plurality of pipe blanks 300 are sleeved on the guide mandrel 200 in sequence by a worker, then the propeller 400 and the heating coil 500 are started, the propeller 400 starts to push the pipe blanks 300 to move from left to right, the heating coil 500 heats the pipe blanks 300 passing through the area where the pipe blanks are positioned, and simultaneously the plurality of outer forming dies 600 and the plurality of inner forming dies 700 slide reciprocally along the forming track of the pipe blanks 300, when the pipe blanks 300 pass through the area where the heating coil 500, the heating coil 500 heats the pipe blanks 300, so that the pipe blanks 300 are heated, the deformability is increased, under the pushing action of the propeller 400, the pipe blanks 300 gradually move to the area where the outer forming dies 600 and the inner forming dies 700 are positioned, and at the moment, the pipe blanks 300 sliding to the area where the outer forming dies 600 and the inner forming dies 700 are positioned are extruded to form a required elbow shape under the reciprocal sliding action of the plurality of the outer forming dies 600 and the inner forming dies 700; by arranging the outer forming die 600 and the inner forming die 700 in a shape capable of sliding relative to the pipe blank 300, the inner pipe wall and the outer pipe wall of the pipe blank 300 can be simultaneously slid, extruded and shaped and support the inner pipe wall and the outer pipe wall, so that the heated pipe blank 300 is prevented from being influenced by the pipe blank to cause local deformation to be increased, and the forming quality of the inner pipe wall and the outer pipe wall of the pipe blank 300 is better.
It should be further added that, by arranging the outer forming die 600 and the inner forming die 700 at intervals, the internal stress of the pipe blank 300 during the thermoforming process of the pipe blank 300 can be released, so that the friction force between the outer forming die 600 and the inner forming die 700 and the pipe blank 300 can be reduced, the pulling action between the pipe blank 300 and the outer forming die 600 and the inner forming die 700 at a higher temperature is reduced, and the elbow forming quality of the pipe blank 300 can be better, and the processing efficiency is higher.
It is also added that the outer shaping mold 600 can also support the cantilever ends of the pipe blank 300 and the guide mandrel 200, so as to avoid uneven heating caused by integral shaking, and make the uniformity of heating the pipe blank 300 better.
In a further embodiment, as shown in fig. 6, the outer forming die 600 and the inner forming die 700 move in opposite directions along the forming trajectory of the parison 300.
By making the movement directions of the outer forming die 600 and the inner forming die 700 along the forming track of the pipe blank 300 opposite, the internal stress when the pipe blank 300 is extruded can be released more easily in the process of extrusion forming of the pipe blank 300 by the outer forming die 600 and the inner forming die 700, so that the friction force between the outer forming die 600 and the inner forming die 700 and the pipe blank 300 can be further reduced.
In a further embodiment, as shown in fig. 2 and 3, a first driving assembly 800 is disposed on the forming platform 100, the first driving assembly 800 is used for driving a plurality of outer forming dies 600 to slide reciprocally along the forming track of the tube blank 300, the first driving assembly 800 includes a plurality of supporting frames 810, rotating wheels 820, connecting rods 830 and a deflector 840, the supporting frames 810 are symmetrically disposed on the forming platform 100 and located on the front and rear sides of the outer forming dies 600, through guiding grooves 811 are disposed on the side surfaces of the supporting frames 810, the guiding grooves 811 are adapted to the forming track of the tube blank 300, the rotating wheels 820 can rotate around the axes thereof and the rotating wheels 820 are rotatably disposed on the supporting frames 810, the deflector 840 is disposed at intervals in the circumferential direction of the rotating wheels 820, the connecting rods 830 are fixedly connected to the front and rear ends of the outer forming dies 600, and the connecting rods 830 are in stop fit with the deflector 840.
When the plurality of outer forming dies 600 need to be driven to slide reciprocally along the forming track of the pipe blank 300, the rotating wheel 820 is made to rotate reciprocally within a preset angle, and when the rotating wheel 820 rotates anticlockwise, the rotating wheel 820 pushes the connecting rod 830 to move along the guiding groove 811 through the deflector 840, the connecting rod 830 drives the outer forming dies 600 to move along the forming track of the pipe blank 300, so that the outer forming dies 600 and the pipe blank 300 slide relatively; when the rotating wheel 820 rotates clockwise, the outer forming mold 600 is gradually restored to the initial position by the elastic force of the first spring 610.
It is also added that, in order to drive the rotating wheel 820 to rotate, specifically, a servo motor may be provided on the forming platform 100, and an output shaft of the servo motor is fixedly connected with a center of the rotating wheel 820, and the rotating wheel 820 can reciprocally rotate within a preset angle through the output shaft of the servo motor.
In a further embodiment, as shown in fig. 2 and 5, the right end of the forming platform 100 is provided with a second driving assembly 900, the second driving assembly 900 is used for driving a plurality of inner forming dies 700 to slide reciprocally along the forming track of the pipe blank 300, the second driving assembly 900 includes a telescopic rod 910 and an arc connecting block 920, the fixed end of the telescopic rod 910 is connected to the forming platform 100, the arc connecting block 920 is elastically connected to the right end of the guiding mandrel 200, specifically, an arc sinking groove adapted to the forming track of the pipe blank 300 is formed at the right end of the guiding mandrel 200, the arc connecting block 920 is slidably connected in the arc sinking groove, the arc connecting block 920 is fixedly connected to the guiding mandrel 200 through a third spring 921, the telescopic end of the telescopic rod 910 is abutted against the arc connecting block 920, the inner forming die 700 at the rightmost end is connected to the arc connecting block 920, and the inner forming die 700 at the leftmost end is connected to the left end of the guiding mandrel 200.
When a plurality of inner forming dies 700 need to be driven to slide reciprocally along the forming track of the pipe blank 300, the telescopic end of the telescopic rod 910 is extended, the telescopic end of the telescopic rod 910 pushes the arc-shaped connecting block 920 to move along the arc-shaped sinking groove, at this time, the distance between two adjacent inner forming dies 700 is reduced, the inner forming dies 700 slide relative to the pipe blank 300, when the telescopic end of the telescopic rod 910 contracts, under the action of the elastic force of the third spring 921 and the second spring 710, the distance between two adjacent inner forming dies 700 is increased, and under the action of the reciprocating telescopic action of the telescopic end of the telescopic rod 910, the inner forming dies 700 slide reciprocally relative to the pipe blank 300, so that the extrusion forming of the inner pipe wall of the pipe blank 300 is completed.
In a further embodiment, as shown in fig. 2, a planetary disk 930 is disposed at the right end of the molding platform 100, and the planetary disk 930 can rotate around its axis, and there are a plurality of telescopic rods 910, and a plurality of telescopic rods 910 are circumferentially disposed on the planetary disk 930 at equal intervals.
After the pipe blank 300 is extruded into an elbow by the outer forming die 600 and the inner forming die 700, the pipe blank 300 falls onto the telescopic rod 910 from the area of the outer forming die 600 and the inner forming die 700 under the pushing action of the propeller 400; under the guiding supporting effect of the telescopic rod 910, the falling speed of the processed pipe blank 300 can be slowed down, the possibility of collision deformation on the surface of the pipe blank 300 is reduced, in addition, the planetary disc 930 can rotate the processed pipe blank 300 to a blanking area, and then the processed pipe blank 300 is taken down, so that deformation caused by collision among the processed pipe blanks 300 can be avoided, and in addition, the production efficiency is also improved.
In a further embodiment, the telescopic rod 910 is further provided with a spray head 940, and the spray head 940 is configured to cool the processed pipe blank 300. Specifically, a water storage tank and a water pump may be disposed on the forming platform 100, wherein a water inlet end of the water pump is disposed in the water storage tank, and a water outlet end of the water pump is connected with the nozzle 940, so that cooling water in the water storage tank is sprayed to the surface of the processed pipe blank 300 through the nozzle 940.
In a further embodiment, as shown in fig. 1, the forming platform 100 is further provided with a linear guide rail 110, the linear guide rail 110 extends in the left-right direction, and the pusher 400 is slidably connected to the linear guide rail 110. The linear guide rail 110 is provided for guiding the movement of the pusher 400, so that the pusher 400 pushes the pipe blank 300 forward in a linear manner, and uneven stress of the pipe blank 300 in the moving process is avoided.
A high-pressure-resistant elbow forming process for a thermal power station comprises the following steps:
s100, sequentially sleeving a plurality of pipe blanks 300 outside the guide mandrel 200;
s200, starting the propeller 400, and driving the pipe blank 300 to move from left to right;
s300, the first driving assembly 800 is started to drive the plurality of outer forming dies 600 to slide reciprocally along the forming track of the pipe blank 300, and the second driving assembly 900 is started to drive the plurality of inner forming dies 700 to slide reciprocally along the forming track of the pipe blank 300.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (5)
1. High pressure resistant elbow forming device for thermal power station, characterized by comprising:
a forming platform;
the guide mandrel is arranged on the forming platform and extends along the left-right direction;
the pipe blank is sleeved outside the guide mandrel;
the pusher is arranged on the forming platform and used for pushing the pipe embryo to move along the guide mandrel;
the heating coil is arranged on one side of the guide mandrel and is used for heating the pipe blank passing through the heating coil;
the outer forming dies are arranged at intervals and are elastically connected with each other, and the outer forming dies can slide back and forth along the forming track of the pipe blank;
the inner forming dies are also arranged at intervals and are elastically connected with each other, and the inner forming dies can slide back and forth along the forming track of the pipe blank; the movement directions of the outer forming die and the inner forming die along the forming track of the pipe blank are opposite; the forming platform is provided with a first driving assembly which is used for driving a plurality of outer forming dies to slide back and forth along the forming track of the pipe blank; the first driving assembly comprises a plurality of supporting frames, rotating wheels, connecting rods and deflector rods, wherein the supporting frames are symmetrically arranged on the forming platform and positioned at the front side and the rear side of the outer forming die, the side surfaces of the supporting frames are provided with through guide grooves, the guide grooves are matched with the forming track of the pipe blanks, the rotating wheels can rotate around the axes of the rotating wheels and are arranged on the supporting frames in a rotating mode, the deflector rods are arranged on the circumference of the rotating wheels at intervals, the connecting rods are fixedly connected at the front end and the rear end of the outer forming die, and the connecting rods are in stop fit with the deflector rods; the right end of the forming platform is provided with a second driving assembly, and the second driving assembly is used for driving a plurality of inner forming dies to slide back and forth along the forming track of the pipe blank; the second driving assembly comprises a telescopic rod and an arc-shaped connecting block, the fixed end of the telescopic rod is connected to the forming platform, the arc-shaped connecting block is elastically connected to the right end of the guide mandrel, and the telescopic end of the telescopic rod is abutted against the arc-shaped connecting block;
among the plurality of inner forming dies, the inner forming die at the rightmost end is connected with the arc-shaped connecting block, and the inner forming die at the leftmost end is connected with the left end of the guide mandrel.
2. The high-pressure-resistant elbow forming device for thermal power stations according to claim 1, wherein a planetary disc is arranged at the right end of the forming platform, the planetary disc can rotate around the axis of the planetary disc, a plurality of telescopic rods are arranged on the planetary disc at equal intervals in the circumferential direction.
3. The high-pressure-resistant elbow forming device for a thermal power station according to claim 2, wherein the telescopic rod is further provided with a spray head.
4. The high-pressure-resistant elbow forming device for a thermal power station according to claim 1, wherein the forming platform is further provided with a linear guide rail, the linear guide rail extends along the left-right direction, and the propeller is slidably connected with the linear guide rail.
5. A process for forming a high-pressure-resistant elbow for a thermal power station, which is characterized by being applied to the high-pressure-resistant elbow forming device for a thermal power station according to any one of claims 1 to 4, and comprising the following steps:
s100, sequentially sleeving a plurality of pipe blanks outside a guide mandrel;
s200, starting a propeller to drive the pipe blank to move from left to right;
s300, starting the first driving assembly to drive the outer forming dies to slide reciprocally along the forming track of the pipe blank, and simultaneously starting the second driving assembly to drive the inner forming dies to slide reciprocally along the forming track of the pipe blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410116170.XA CN117644140B (en) | 2024-01-29 | 2024-01-29 | High-pressure-resistant elbow forming device and forming process for thermal power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410116170.XA CN117644140B (en) | 2024-01-29 | 2024-01-29 | High-pressure-resistant elbow forming device and forming process for thermal power station |
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| CN117644140A CN117644140A (en) | 2024-03-05 |
| CN117644140B true CN117644140B (en) | 2024-04-05 |
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| CN214391799U (en) * | 2020-11-26 | 2021-10-15 | 泰科图比（天津）管件有限公司 | Large-scale elbow hot pushing device |
| CN116140434A (en) * | 2023-04-20 | 2023-05-23 | 河北鹏鑫管道装备集团有限公司 | Hot briquetting equipment of elbow pipe fitting |
| CN117206378A (en) * | 2023-09-06 | 2023-12-12 | 青岛昌辉管业有限公司 | Hot pushing forming machine |
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| CN117644140A (en) | 2024-03-05 |
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